CN212867877U

CN212867877U - Piston ring of inflating pump

Info

Publication number: CN212867877U
Application number: CN202021228991.6U
Authority: CN
Inventors: 陈校波; 赵志超; 戴志鹏; 叶峰
Original assignee: Zhejiang Weibang Electromechanical Technology Co ltd
Current assignee: Zhejiang Weibang Electromechanical Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-04-02
Anticipated expiration: 2030-06-29

Abstract

The utility model provides an inflation pump piston ring belongs to hand power inflation pump technical field. It has solved the not enough problem of current inflating pump piston air flow. The piston ring of the inflation pump comprises a piston main body with an opening at the bottom and a cover plate used for covering the opening, wherein the space between the piston main body and the cover plate is divided by a partition plate into a first air guide chamber and a second air guide chamber which are not communicated with each other, the piston main body is provided with a first valve port and a second valve port, the cover plate is provided with a third valve port and a fourth valve port, the first valve port and the third valve port are communicated with the first air guide chamber, the second valve port and the fourth valve port are communicated with the second air guide chamber, each valve port is provided with a one-way valve plate, the upper part of the piston main body is provided with an inclined plane, and the first valve port and the second valve port are arranged on the inclined. The utility model discloses the sealing washer place plane has been avoided to the position that sets up of first valve port and second valve port, can set up the valve port size bigger than ordinary piston under the prerequisite of same diameter to strengthen the airflow of ventilating.

Description

Piston ring of inflating pump

Technical Field

The utility model belongs to the technical field of the hand power inflating pump, a inflating pump piston ring is related to.

Background

The manual inflating pump is widely accepted and loved by consumers as a tool for inflating inflatable products in daily life, and the inflating pump products in the market are various, have unidirectional inflation and bidirectional inflation and air exhaust, but realize bidirectional inflation and air exhaust, and the key part is a piston ring, which has important influence on the function and performance of the inflating pump.

There is a two-way inflating pump piston ring, and the gas inlet, the gas outlet respectively have four flaps, gives vent to anger two valves in the air guide chamber and need bond, and the apron of both sides also needs bond in addition, and the process is comparatively loaded down with trivial details, and bonding part is in large quantity, and the gas leakage risk is great.

In order to solve the above problems, patent 201410333280.8 proposes a new piston structure, in which four valve seats of the air inlet and outlet guide chambers are integrated with the piston main body, and the valve plate is directly mounted on the valve opening without bonding, and only the cover plates on the two side faces are bonded after the valve plate is mounted. Compared with the piston structure, the structure reduces the bonding parts and reduces the risks of air leakage and the like. However, because the valve plate in the air inlet and guide chamber needs to be installed from the inside, the installation is very inconvenient due to the space limitation; and 2 fittings need to be bonded, and arc bonding or welding is easy to occur due to different bonding processes and bonding is not simultaneously operated.

Another patent 201020575459.1 discloses a piston ring structure, wherein two valve openings are formed on the horizontal surface of the upper part of the piston body, and the other two valve openings are formed on a single cover plate fitting, when in installation, each valve piece is installed on each valve opening, and after the sealing ring is fixed by a fixing support, the cover plate is bonded on the piston body. However, in the structure, the sealing ring is arranged in the middle of the piston ring main body, and the two valve ports are arranged on the horizontal surface of the upper part of the piston main body, so that the size arrangement of the air inlet and the air outlet of the two valve ports on the upper part is influenced, and a larger valve port size and a larger air flow can not be formed on the premise of the same diameter; and its sealing washer also needs solitary fixed bolster to fix to increased accessory quantity, the equipment operation is also more loaded down with trivial details.

According to the problems, the existing piston structure of the bidirectional inflating pump can be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems of the prior inflating pump piston, and provides an inflating pump piston ring which is convenient for mounting a valve plate and can be provided with a valve port with larger size.

The purpose of the utility model can be realized by the following technical proposal:

an inflating pump piston ring comprises a piston main body with an opening at the bottom and a cover plate for covering the opening, wherein the piston main body is provided with an inner hole and an outer hole, the inner hole is positioned in the outer hole, the space between the piston main body and the cover plate is divided into a first air guide chamber and a second air guide chamber which are not communicated by a partition plate, the first air guide chamber is communicated with the space between the inner hole and the outer hole, the second air guide chamber is communicated with the inner hole, the piston main body is provided with a first valve port and a second valve port, the cover plate is provided with a third valve port and a fourth valve port, the first valve port and the third valve port are communicated with the first air guide chamber, the second valve port and the fourth valve port are communicated with the second air guide chamber, and each valve port is provided with a one-way, the piston is characterized in that the upper part of the piston main body is provided with an inclined surface, the first valve port and the second valve port are arranged on the inclined surface, and the outer side of the cover plate or the piston main body is provided with a sealing ring.

In the above-mentioned piston ring of the inflation pump, an annular clamping groove is formed in the outer peripheral surface of the cover plate, and the sealing ring is arranged in the clamping groove.

In the above-mentioned piston ring of the inflation pump, an annular groove is formed in the outer peripheral surface of the piston main body, the sealing ring is disposed in the groove, and the first valve port and the second valve port are formed at positions avoiding the plane where the groove is located.

In the above-mentioned piston ring of the inflation pump, the outer peripheral surface of the cover plate is provided with a circle of lower protrusions, the outer peripheral surface of the lower portion of the piston main body is provided with a circle of upper protrusions, when the cover plate is covered with the piston main body, a gap between the upper protrusions and the lower protrusions forms an annular clamping groove, and the sealing ring is arranged in the clamping groove.

In the above-mentioned piston ring of the inflation pump, the piston body and the cover plate are connected together by bonding or welding.

In the above-mentioned piston ring of the inflation pump, the inner side surface of the cover plate is provided with a slot corresponding to the outer contours of the partition plate and the opening of the piston body.

In the above-mentioned piston ring of the inflation pump, the inner hole and the outer hole are both located at the center of the piston body and are concentric.

In the above-mentioned piston ring of the inflation pump, the piston ring further includes an upper retaining edge and a lower retaining edge fixedly disposed on the periphery, and when the piston ring moves downward, the upper retaining edge is retained on the deformation path of the sealing ring; when the piston ring moves upwards, the lower baffle edge is blocked on the deformation path of the sealing ring.

In the above-mentioned piston ring of the inflation pump, the upper blocking edge and the lower blocking edge are both fixedly arranged on the peripheral surface of the cover plate.

In the above-mentioned piston ring of the inflation pump, the upper blocking edge and the lower blocking edge are respectively fixed on the outer peripheral surfaces of the piston main body and the cover plate.

In the above-mentioned piston ring of the inflation pump, the upper blocking edge and the lower blocking edge are both fixedly arranged on the outer peripheral surface of the piston main body.

Compared with the prior art, the utility model has the advantages of as follows:

1. the split arrangement of the piston main body and the cover plate is adopted, and the valve plate convenient to mount is selected, so that the adhesion or welding of accessories is reduced, and the risk of air leakage is reduced.

2. Adopt plane laminating adhesion between apron and the piston main part, it is also more stable than arc welded leakproofness to the quality of product has been improved.

3. The clamping groove for installing the sealing ring is formed by splicing the cover and the piston main body, so that the sealing ring is convenient to install and the sealing performance is ensured.

4. The first valve port and the second valve port are arranged at positions which avoid the plane where the sealing ring is arranged, and the valve port size larger than that of a common piston can be arranged on the premise of the same diameter, so that the ventilation air flow is increased.

5. The upper blocking edge and the lower blocking edge are arranged on the upper portion and the lower portion of the sealing ring respectively, the sealing ring is limited, and the sealing ring is prevented from being deformed and shaken too much to fall off during working.

Drawings

Fig. 1 is a schematic perspective view of embodiment 1.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a bottom view of the piston main body in embodiment 1.

Fig. 4 is a schematic structural view of the cover plate in embodiment 1.

Fig. 5 is an overall sectional view of embodiment 1.

FIG. 6 is an overall sectional view of embodiment 2.

FIG. 7 is an overall sectional view of embodiment 4.

In the figure, 1, a piston body; 2. a cover plate; 3. an inner bore; 4. an outer bore; 5. a partition plate; 6. A first gas conduction chamber; 7. a second gas conduction chamber; 8. an inclined surface; 9. a first valve port; 10. a second valve port; 11. a third valve port; 12. a fourth valve port; 13. a slot; 14. a lower bulge; 15. an upper bulge; 16. a card slot; 17. a seal ring; 18. a valve plate; 19. an upper blocking edge; 20. and (5) a lower blocking edge.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1

As shown in fig. 1-5, the piston ring of the inflation pump comprises a piston body 1 with an opening at the bottom and a cover plate 2 for covering the opening, wherein an inner hole 3 for connecting with an inner pipe and an outer hole 4 for connecting with an outer pipe are arranged at the center of the piston body 1, the inner hole 3 and the outer hole 4 are concentric, and the inner hole 3 is positioned in the outer hole 4.

The inner space between the piston main body 1 and the cover plate 2 is divided by a partition plate 5 into a first air guide chamber 6 and a second air guide chamber 7 which are not communicated with each other, the first air guide chamber 6 is communicated with the gap space between the inner hole 3 and the outer hole 4 to form an air outlet channel, and the second air guide chamber 7 is communicated with the inner hole 3 to form an air inlet channel.

The middle part of the piston main body 1 is in a frustum shape with a small top and a big bottom, the outer side surface is provided with an inclined surface 8, the inclined surface 8 is provided with a first valve port 9 and a second valve port 10, the cover plate 2 is provided with a third valve port 11 and a fourth valve port 12, the first valve port 9 and the third valve port 11 are communicated with the first air guide chamber 6, the second valve port 10 and the fourth valve port 12 are communicated with the second air guide chamber 7, and each valve port is provided with a one-way valve piece 18.

As shown in fig. 3 and 4, the lower edge of the partition plate 5 is flush with the open end of the piston body 1, and the inner side surface of the cover plate 2 is provided with a slot 13 corresponding to the outer contour of the opening of the partition plate 5 and the piston body 1. The cover plate 2 can be adhered and covered with the opening of the piston main body 1 in a welding or bonding mode, and after the cover is covered, the lower edge of the partition plate 5 and the end part of the opening of the piston main body 1 are embedded into the corresponding slot 13 to realize sealing.

As shown in fig. 5, a circle of lower protrusions 14 is formed on the outer circumferential surface of the cover plate 2, a circle of upper protrusions 15 is formed on the outer circumferential surface of the lower portion of the piston main body 1, when the cover plate 2 is covered with the piston main body 1, an annular clamping groove 16 is formed in a gap between the upper protrusions 15 and the lower protrusions 14, and a sealing ring 17 is arranged in the clamping groove 16. On one hand, the upper bulge 15 and the lower bulge 14 can clamp the inner side end of the sealing ring 17, so that the firm sealing performance of the sealing ring 17 is ensured; on the other hand, during assembly, the sealing ring 17 does not need to be propped open and sleeved, and only needs to be assembled according to the assembly sequence, so that the assembly efficiency is improved.

During assembly, the valve plates 18 are correspondingly arranged on the valve ports, the sealing ring 17 is sleeved at the lower end of the piston main body 1, the cover plate 2 is covered to realize adhesion, and the upper bulge 15 and the lower bulge 14 on the sealing ring 17 are clamped tightly to ensure the sealing performance with the inner wall of the air pump during inflation.

Example 2

As shown in fig. 6, in the present embodiment, the locking groove 16 is directly formed on the outer peripheral surface of the lid plate 2, and the seal ring 17 is provided in the locking groove 16, and the rest is the same as the embodiment.

Example 3

In this embodiment, the engaging groove 16 is separately formed on the outer peripheral surface of the lower end of the piston body 1, the seal ring 17 is disposed in the engaging groove 16, and the opening positions of the first valve port 9 and the second valve port 10 are kept away from the plane of the engaging groove 16.

Example 4

As shown in fig. 7, in the present embodiment, the piston ring further includes an upper retaining edge 19 and a lower retaining edge 20 fixedly disposed on the outer periphery, in the present embodiment, both the upper retaining edge 19 and the lower retaining edge 20 are annular, the upper retaining edge 19 is integrally and fixedly disposed on the outer peripheral surface of the piston body 1, and the lower retaining edge 20 is integrally and fixedly disposed on the outer peripheral surface of the cover plate 2.

When the piston ring moves downwards, the sealing ring 17 deforms upwards under the friction action of the inflator barrel, the upper blocking edge 19 plays a limiting and blocking role, and the sealing ring 17 is prevented from falling off due to too large deformation. When the piston ring moves upwards, the sealing ring 17 is blocked by the lower blocking edge 20, and the sealing ring 17 is prevented from falling downwards.

The upper and lower retaining edges 19 and 20 may be uniformly disposed outside the piston body 1 or on the outer circumferential surface of the cover plate 2, in addition to the embodiment.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An inflating pump piston ring comprises a piston main body (1) with an opening at the bottom and a cover plate (2) used for covering the opening, wherein an inner hole (3) and an outer hole (4) are formed in the piston main body (1), the inner hole (3) is positioned in the outer hole (4), a space between the piston main body (1) and the cover plate (2) is divided into a first air guide chamber (6) and a second air guide chamber (7) which are not communicated with each other by a partition plate (5), the first air guide chamber (6) is communicated with the space between the inner hole (3) and the outer hole (4), the second air guide chamber (7) is communicated with the inner hole (3), a first valve port (9) and a second valve port (10) are formed in the piston main body (1), a third valve port (11) and a fourth valve port (12) are formed in the cover plate (2), the first valve port (9) and the third valve port (11) are communicated with the first air guide chamber (6), and the second valve port (10) and the fourth valve port (12) are communicated with the second air guide chamber (7), each valve port is provided with a one-way valve sheet (18), and the piston is characterized in that the upper part of the piston main body (1) is provided with an inclined surface (8), the first valve port (9) and the second valve port (10) are arranged on the inclined surface (8), and the outer side of the cover plate (2) or the piston main body (1) is provided with a sealing ring (17).

2. The piston ring of the inflation pump as claimed in claim 1, wherein the cover plate (2) has an annular groove (16) formed on an outer circumferential surface thereof, and the seal ring (17) is disposed in the groove (16).

3. The piston ring of the inflation pump according to claim 1, wherein an annular groove (16) is formed in an outer circumferential surface of the piston body (1), the sealing ring (17) is disposed in the groove (16), and the first port (9) and the second port (10) are disposed so as to avoid a plane in which the groove (16) is located.

4. The piston ring of the inflation pump according to claim 1, wherein the cover plate (2) has a lower protrusion (14) on the outer circumferential surface thereof, and a lower protrusion (15) on the outer circumferential surface thereof, and the cover plate (2) is covered with the piston body (1), the gap between the upper protrusion (15) and the lower protrusion (14) forms an annular groove (16), and the sealing ring (17) is disposed in the groove (16).

5. An inflator piston ring according to claim 1, 2, 3 or 4, wherein the piston body (1) and the cover plate (2) are bonded together by adhesion or welding.

6. The piston ring of the inflation pump as claimed in claim 1, 2, 3 or 4, wherein the cover plate (2) has slots (13) formed on its inner surface corresponding to the outer contours of the openings of the partition plate (5) and the piston body (1).

7. The piston ring of the inflation pump as claimed in claim 1, 2, 3 or 4, wherein the piston ring further comprises an upper retaining edge (19) and a lower retaining edge (20) fixedly arranged on the outer periphery, and when the piston ring descends, the upper retaining edge (19) is retained on the deformation path of the sealing ring (17); when the piston ring moves upwards, the lower blocking edge (20) blocks on the deformation path of the sealing ring (17).

8. The piston ring of the inflation pump as claimed in claim 7, wherein the upper and lower retaining rims (19, 20) are fixedly disposed on the outer circumferential surface of the cover plate (2).

9. The piston ring for an inflation pump as claimed in claim 7, wherein the upper and lower rims (19, 20) are fixed to the outer circumferential surfaces of the piston body (1) and the cover plate (2), respectively.

10. The piston ring of the inflation pump as claimed in claim 7, wherein the upper and lower retaining rims (19, 20) are fixedly disposed on the outer circumferential surface of the piston body (1).